目的:观察实时超声反馈对腹横肌运动控制的影响,探讨下背痛患者腹横肌运动控制训练的方法.方法:对33例试验对象随机分组,比较在有无实时超声反馈下两组试验对象腹横肌的收缩率,腰椎稳定性从1级上升至2级所需的训练次数和训练时间是否存在差异.结果:腹横肌收缩率(P=0.662＞ 0.05)两组间无差异;训练次数(P=0.018＜ 0.05)和训练时间(P=0.0ll＜ 0.05)两组间存在差异,且训练次数均值试验组(1.5次)小于对照组(3.1次),训练时间均值试验组(13.4min)小于对照组(30.8min).结论:实时超声反馈不会增加腹横肌收缩的效率;实时超声反馈能使试验对象用较少的次数,在较短时间内掌握腹横肌收缩的方法.%Objective:To observe the effect of real-ultrasound feedback on the motor control of transversus abdominal muscle (TrA);To explore the way for patients with low back pain to retraining the motor control of TrA.Method:Thirty-three subjects were allocated at random to the experimental group and the control group.The experimental group performed the way to contract TrA with real-ultrasound feedback,while the control group performed that alone.Result:①Non significant difference was found in TrA contraction-ratio between the groups (P=0.662 ＞ 0.05);② Significant differences were found in training times (P=-0.018＜0.05) and training time (P=0.011 ＜0.05) and the means of both training times (1.5＜3.1 times) and training time (13.4＜30.8 min) in control group were less than that of experimental group.Conclusion:The real-ultrasound feedback does not increase the TrA contraction-ratio,however it contributes to make it easy for subjects to master the way to contract TrA.
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